/* roulang page: index */
:root{
  --amber:#E2542B;--amber-dark:#C4431F;--purple:#3B2F55;
  --paper:#FAF7F1;--card:#FFFFFF;--alt:#F3EDE2;
  --text:#211E26;--muted:#6B6472;--line:#E4DCCB;--link:#2F5D8C;
  --mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --radius:10px;
  --shadow:0 1px 2px rgba(33,30,38,.06);
  --shadow-h:0 6px 18px rgba(33,30,38,.10);
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:15.5px;line-height:1.7;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;letter-spacing:-.2px}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
a{color:var(--link);text-decoration:none}
a:hover{color:var(--amber-dark)}
img{max-width:100%;display:block}
ul,ol{list-style:none;margin:0;padding:0}
dl,dd,dt{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--purple);outline-offset:2px}
.container{max-width:1180px;margin:0 auto;padding:0 24px;width:100%}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(250,247,241,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex:none}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--amber);color:#fff;display:grid;place-items:center;font-size:16px;font-weight:700}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.5px}
.main-nav{display:flex;gap:22px;margin-left:8px}
.main-nav a{color:var(--muted);font-size:15px;padding:6px 0;border-bottom:2px solid transparent;transition:color .18s ease}
.main-nav a:hover{color:var(--text)}
.main-nav a.active{color:var(--text);font-weight:600;border-bottom-color:var(--amber)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-mini{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden}
.search-mini input{border:0;background:transparent;padding:8px 10px;font-size:14px;width:150px;color:var(--text);outline:none}
.search-mini button{border:0;background:transparent;color:var(--amber);font-size:14px;font-weight:600;padding:8px 12px;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 22px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease;border:1px solid transparent}
.btn-primary{background:var(--amber);color:#fff;border-color:var(--amber)}
.btn-primary:hover{background:var(--amber-dark);border-color:var(--amber-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--purple);border-color:var(--purple)}
.btn-ghost:hover{background:rgba(59,47,85,.08);color:var(--purple);transform:translateY(-1px)}
.btn-sm{min-height:38px;padding:7px 16px;font-size:14px}

/* hero */
.hero{position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(250,247,241,.90),rgba(250,247,241,.97))}
.hero-inner{position:relative;z-index:1;padding-top:56px;padding-bottom:56px;align-items:flex-start}
.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--amber);margin-bottom:14px}
.hero h1{font-size:clamp(28px,4vw,44px);margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--purple);font-weight:600;margin-bottom:12px}
.hero-lead{color:var(--muted);max-width:56ch}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 20px}
.hero-search{display:flex;max-width:460px;border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden;box-shadow:var(--shadow)}
.hero-search input{flex:1;border:0;padding:12px 14px;font-size:15px;color:var(--text);background:transparent;outline:none;min-height:48px}
.hero-search button{border:0;background:var(--purple);color:#fff;font-size:15px;font-weight:600;padding:0 22px;cursor:pointer;transition:background .18s ease}
.hero-search button:hover{background:#2b2240}

/* infobox */
.infobox{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px;margin-top:4px}
.infobox-title{font-family:var(--mono);font-size:13px;letter-spacing:.12em;color:var(--purple);text-transform:uppercase;margin-bottom:12px}
.ib-row{display:flex;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px dashed var(--line);font-size:14px}
.ib-row dt{color:var(--muted);flex:none}
.ib-row dd{text-align:right;color:var(--text)}
.ib-updated{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin:14px 0 10px}
.ib-tags{display:flex;flex-wrap:wrap;gap:6px}
.ib-tags li,.tag{font-family:var(--mono);font-size:12px;padding:3px 9px;border:1px solid var(--line);border-radius:6px;background:var(--alt);color:var(--muted)}

/* sections */
.section{padding:72px 0}
.section-alt{background:var(--alt)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:32px}
.section-head h2{font-size:clamp(22px,2.4vw,28px)}
.section-tag{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--muted);white-space:nowrap}
.lead{color:var(--muted);max-width:74ch;margin-bottom:28px}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;height:100%;transition:box-shadow .18s ease,transform .18s ease}
.card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.card h3{font-size:17px;margin-bottom:6px}
.card p{color:var(--muted);font-size:14px}
.numdot{font-family:var(--mono);font-size:12px;color:var(--amber);border:1px solid var(--line);background:var(--alt);border-radius:6px;padding:2px 7px;display:inline-block;margin-bottom:12px}
.card .tag{margin-top:12px;display:inline-block}

/* solution */
.solution-point{display:flex;gap:16px;padding:16px 0;border-bottom:1px dashed var(--line)}
.solution-point:last-child{border-bottom:0}
.solution-point .sp-num{font-family:var(--mono);font-size:20px;font-weight:700;color:var(--amber);line-height:1.2;flex:none;width:44px}
.solution-point h3{font-size:17px;margin-bottom:4px}
.solution-point p{color:var(--muted);font-size:14px}
.media-frame{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--alt);box-shadow:var(--shadow)}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.frame-note{font-size:13px;color:var(--muted);padding-top:10px;margin-top:10px;border-top:1px solid var(--line)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:24px 18px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step-num{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--amber);opacity:.85;display:block;margin-bottom:10px}
.step h3{font-size:16px;margin-bottom:6px}
.step p{font-size:13.5px;color:var(--muted)}

/* stats */
.stats .stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;text-align:left;height:100%}
.stat-num{font-family:var(--mono);font-size:34px;font-weight:700;color:var(--purple);line-height:1.1}
.stat-unit{font-family:var(--mono);font-size:14px;color:var(--amber);margin-left:4px}
.stat p{font-size:13.5px;color:var(--muted);margin-top:8px}

/* topics */
.topic-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);height:100%;transition:box-shadow .18s ease,transform .18s ease}
.topic-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.topic-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.topic-body{padding:16px 18px}
.topic-body h3{font-size:17px;margin-bottom:6px}
.topic-body p{font-size:13.5px;color:var(--muted);margin-bottom:12px}
.topic-count{font-family:var(--mono);font-size:12px;color:var(--purple);border:1px solid var(--line);background:var(--alt);border-radius:6px;padding:2px 8px;display:inline-block}

/* picks */
.pick-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.pick-item:first-child{padding-top:0}
.pick-thumb{flex:none;width:180px;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:var(--alt)}
.pick-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.pick-body h3{font-size:17px;margin-bottom:6px}
.pick-body p{font-size:14px;color:var(--muted)}
.pick-meta{font-family:var(--mono);font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.pick-meta .tag{font-family:var(--mono)}
.side-rec{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.side-rec h3{font-size:16px;margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line)}
.side-rec li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:14px}
.side-rec li:last-child{border-bottom:0;padding-bottom:0}
.side-rec .rec-note{font-size:13px;color:var(--muted);margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}

/* quotes */
.quote-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;height:100%}
.quote-mark{font-family:var(--mono);font-size:34px;color:var(--amber);opacity:.5;line-height:1}
.quote-card p{font-size:14.5px;color:var(--text);margin:8px 0 18px}
.quote-person{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:14px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--alt);border:1px solid var(--line);display:grid;place-items:center;font-family:var(--mono);color:var(--purple);font-size:15px;flex:none}
.quote-person span{font-size:13px;color:var(--muted)}
.quote-person strong{display:block;font-size:14px;color:var(--text)}

/* audience */
.aud-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;height:100%;transition:box-shadow .18s ease,transform .18s ease}
.aud-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.aud-card h3{font-size:16.5px;margin-bottom:8px}
.aud-card p{font-size:13.5px;color:var(--muted)}
.aud-card .ib-tags{margin-top:14px}

/* timeline */
.timeline{border-left:2px solid var(--line);padding-left:22px;margin-left:6px}
.tl-item{position:relative;padding-bottom:22px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-29px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--amber);border:2px solid var(--paper)}
.tl-date{font-family:var(--mono);font-size:12.5px;color:var(--amber);letter-spacing:.06em}
.tl-item h3{font-size:16px;margin:4px 0 4px}
.tl-item p{font-size:13.5px;color:var(--muted)}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}
.wiki-table{width:100%;border-collapse:collapse;min-width:560px;font-size:14.5px}
.wiki-table thead th{background:var(--alt);font-family:var(--mono);font-size:13px;font-weight:600;letter-spacing:.06em;text-align:left;padding:12px 18px;border-bottom:1px solid var(--line);color:var(--purple)}
.wiki-table td{padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
.wiki-table tbody tr:nth-child(even){background:#FCFAF6}
.wiki-table tbody tr:hover{background:var(--alt)}
.wiki-table tbody tr:last-child td{border-bottom:0}
.wiki-table td:first-child{color:var(--text);font-weight:600;width:36%}
.wiki-table td:last-child{color:var(--muted)}

/* glossary */
.glossary{display:grid;grid-template-columns:1fr 1fr;gap:0 40px}
.gl-item{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--line)}
.gl-term{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--purple);flex:none;width:96px;border-bottom:1px dashed var(--amber);display:inline-block;line-height:1.5}
.gl-def{font-size:14px;color:var(--muted)}

/* rank */
.rank-row{display:flex;align-items:center;gap:16px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--card)}
.rank-row:last-child{border-bottom:0}
.rank-badge{font-family:var(--mono);font-size:13px;font-weight:700;width:28px;height:28px;border-radius:6px;display:grid;place-items:center;background:var(--purple);color:#fff;flex:none}
.rank-row:nth-child(n+4) .rank-badge{background:var(--alt);color:var(--purple);border:1px solid var(--line)}
.rank-title{flex:none;width:34%;font-size:14.5px;min-width:150px}
.heat{flex:1;height:8px;border-radius:4px;background:var(--alt);overflow:hidden;min-width:80px}
.heat span{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,#F0A184,var(--amber) 70%,var(--amber-dark))}
.heat-val{font-family:var(--mono);font-size:13px;color:var(--muted);width:44px;text-align:right;flex:none}

/* faq */
.accordion{border:0;background:transparent;margin:0}
.accordion-item{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow)}
.accordion-item.is-active{border-left:3px solid var(--amber)}
.accordion-title{border:0;background:var(--card);padding:16px 20px;color:var(--text);font-size:15.5px;font-weight:600;display:flex;align-items:center;gap:12px;transition:color .18s ease}
.accordion-title:hover{color:var(--amber-dark)}
.accordion-title::before{content:"+";position:static;margin-left:auto;order:3;font-family:var(--mono);font-size:18px;color:var(--amber);padding:0}
.accordion-title::after{display:none}
.accordion-item.is-active .accordion-title::before{content:"−"}
.faq-num{font-family:var(--mono);font-size:12.5px;color:var(--muted);flex:none}
.accordion-content{border:0;border-top:1px dashed var(--line);padding:14px 20px 18px;color:var(--muted);font-size:14.5px}

/* cta */
.cta-band{background:var(--purple);color:#fff;padding:64px 0;text-align:center}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.78);max-width:52ch;margin:0 auto 26px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.cta-band .btn-primary{border-color:var(--amber)}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.cta-note{font-family:var(--mono);font-size:12.5px;color:rgba(255,255,255,.6);margin-top:18px}

/* footer */
.site-footer{background:var(--paper);border-top:1px solid var(--line);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:13.5px;color:var(--muted);max-width:32ch}
.footer-col h3{font-size:14px;font-family:var(--mono);letter-spacing:.08em;color:var(--purple);margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--muted);font-family:var(--mono)}

@media (max-width:1024px){
  .main-nav{gap:16px}
  .main-nav a{font-size:14px}
  .search-mini input{width:120px}
  .steps{grid-template-columns:repeat(3,1fr)}
  .step{border-bottom:1px solid var(--line)}
  .step:nth-child(3){border-right:0}
  .glossary{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:26px}
  .footer-brand{grid-column:1/-1}
  .rank-title{width:40%}
}
@media (max-width:768px){
  .header-inner{height:56px;gap:12px}
  .main-nav{overflow-x:auto;white-space:nowrap;gap:14px;margin-left:0;scrollbar-width:none}
  .main-nav::-webkit-scrollbar{display:none}
  .search-mini{display:none}
  .section{padding:48px 0}
  .hero-inner{padding-top:40px;padding-bottom:40px}
  .hero-lead{font-size:15px}
  .section-head{flex-direction:column;align-items:flex-start;gap:6px;margin-bottom:24px}
  .steps{grid-template-columns:1fr;border-bottom:0}
  .step{border-right:0;padding:18px 0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .pick-thumb{width:120px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .rank-row{flex-wrap:wrap;gap:10px}
  .rank-title{width:auto;flex:1}
  .heat{flex-basis:100%;order:4}
  .cta-band{padding:48px 0}
}
@media (max-width:520px){
  body{font-size:14.5px}
  .container{padding:0 16px}
  .brand-name{font-size:16px}
  .hero h1{font-size:26px}
  .hero-btns .btn{width:100%}
  .hero-search{flex-direction:column;border-radius:10px}
  .hero-search button{padding:12px;min-height:44px}
  .pick-item{flex-direction:column;gap:12px}
  .pick-thumb{width:100%}
  .pick-thumb img{aspect-ratio:16/9}
  .stat-num{font-size:26px}
  .quote-card,.card,.aud-card,.side-rec{padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .gl-term{width:80px}
  .accordion-title{padding:14px 16px;font-size:14.5px;align-items:flex-start}
  .accordion-content{padding:12px 16px 16px}
  .section-head h2{font-size:20px}
}

/* roulang page: index */
:root{
  --ink:#221A2E;--ink-soft:#3A3049;--teal:#23C7B4;--amber:#F2A641;--amber-d:#D98C2B;
  --paper:#F6F1E7;--white:#FFFDF8;--line:#D8D0C0;--text:#221A2E;--muted:#6B6472;
  --r-card:8px;--r-btn:4px;--sh:0 2px 0 #D8D0C0;--sh-h:0 10px 24px rgba(34,26,46,.08);
  --serif:"Noto Serif SC","Source Han Serif SC",serif;
  --sans:"Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"Roboto Mono","DIN Alternate",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.32;margin:0;color:var(--ink)}
p{margin:0}
ul{list-style:none;margin:0;padding:0}
button{font-family:inherit}
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.sec{padding:88px 0}
.sec.alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:72ch;margin-bottom:40px}
.sec-head h2{font-size:32px;margin-bottom:10px}
.sec-sub{color:var(--muted);font-size:16px}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:1px;color:var(--teal);border:1px solid var(--line);background:var(--white);border-radius:999px;padding:3px 12px;margin-bottom:18px}

/* 顶部索引条 */
.idxbar{background:var(--ink);color:#CFC7DA;font-size:12px;min-height:32px;display:flex;align-items:center}
.idxbar .grid-container{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%}
.idxbar b{color:var(--paper);font-weight:500}
.idxbar-nav a{margin-left:18px;color:#CFC7DA;transition:color .15s}
.idxbar-nav a:hover{color:var(--teal)}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:var(--white);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:20px;font-weight:600;color:var(--ink)}
.logo-mark{width:34px;height:34px;border-radius:6px;background:var(--ink);color:var(--teal);display:grid;place-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:20px;font-size:15px}
.main-nav a{position:relative;display:flex;align-items:center;min-height:44px;padding:0 2px;color:var(--ink);transition:color .15s}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:transparent;transition:background .15s}
.main-nav a:hover::after,.main-nav a.active::after{background:var(--teal)}
.header-right{display:flex;align-items:center;gap:10px}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--r-btn);font-size:20px;color:var(--ink);background:var(--white);transition:.15s}
.icon-btn:hover{border-color:var(--teal);color:var(--teal)}
.menu-btn{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--white);color:var(--ink);font-size:18px;align-items:center;justify-content:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:500;border:1px solid transparent;cursor:pointer;transition:background .18s,color .18s,transform .18s,border-color .18s;font-family:var(--sans)}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:var(--amber-d);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* Hero */
.hero{background-color:var(--paper);background-image:linear-gradient(rgba(34,26,46,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(34,26,46,.045) 1px,transparent 1px);background-size:24px 24px;padding:64px 0 0;position:relative}
.hero h1{font-size:52px;letter-spacing:.5px;margin-bottom:14px}
.hero-sub{font-size:17px;color:var(--ink-soft);font-weight:500;margin-bottom:14px;max-width:60ch}
.hero-desc{color:var(--muted);font-size:16px;max-width:68ch;margin-bottom:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips li{font-size:13px;color:var(--muted);border:1px solid var(--line);background:var(--white);border-radius:999px;padding:4px 14px}
.stage{position:relative;aspect-ratio:16/10;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--white);box-shadow:var(--sh)}
.stage img{width:100%;height:100%;object-fit:cover}
.stage::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(34,26,46,.04),rgba(34,26,46,.34))}
.stage-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:50%;background:rgba(255,253,248,.94);display:grid;place-items:center;z-index:2;box-shadow:0 2px 0 rgba(34,26,46,.15)}
.stage-play::before{content:"";width:0;height:0;border-left:15px solid var(--ink);border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.stage-tc{position:absolute;left:14px;bottom:14px;font-family:var(--mono);font-size:12px;color:var(--paper);background:rgba(34,26,46,.78);padding:2px 8px;border-radius:3px;z-index:3}
.stage-note{position:absolute;z-index:3;background:var(--white);border:1px solid var(--line);border-radius:6px;padding:7px 12px;line-height:1.45;box-shadow:0 2px 0 var(--line)}
.stage-note b{display:block;font-family:var(--mono);font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.4px}
.stage-note span{font-size:13px;color:var(--ink)}
.n1{left:14px;top:14px}
.n2{right:14px;bottom:14px}
.ruler{height:18px;border-top:1px solid var(--line);background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 16px);background-size:auto 7px;background-repeat:repeat-x;background-position:top left}

/* 痛点卡片 */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.p-card{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh);transition:box-shadow .2s,border-color .2s}
.p-card:hover{box-shadow:var(--sh-h);border-color:var(--teal)}
.p-num{font-family:var(--mono);font-size:12px;letter-spacing:.8px;color:var(--teal)}
.p-card h3{font-size:20px;margin:8px 0 8px}
.p-card p{color:var(--muted);font-size:15px;margin-bottom:14px}
.p-arrow{display:inline-block;font-size:18px;color:var(--teal);transition:transform .2s}
.p-card:hover .p-arrow{transform:translateX(4px)}
.p-a{grid-column:span 2}
.p-d{grid-column:2 / span 2}

/* 解决方案 */
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.cap{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh);transition:box-shadow .2s}
.cap:hover{box-shadow:var(--sh-h)}
.cap-ico{width:36px;height:36px;border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;color:var(--teal);margin-bottom:14px}
.cap-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.cap h3{font-size:20px;margin-bottom:6px}
.cap p{color:var(--muted);font-size:15px}
.infobox{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh)}
.infobox h3{font-family:var(--sans);font-size:15px;font-weight:500;color:var(--muted);letter-spacing:.5px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:6px}
.info-row{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.info-row:last-child{border-bottom:0}
.info-row b{font-weight:500}
.info-row span{font-family:var(--mono);font-size:12px;color:var(--muted)}

/* 内容卡片 */
.pick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);transition:box-shadow .2s,border-color .2s;display:flex;flex-direction:column}
.card:hover{border-color:var(--teal);box-shadow:var(--sh-h)}
.card:hover .more span{transform:translateX(4px)}
.thumb{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,#EFE8DA,#FFFDF8)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.card:hover .thumb img{transform:scale(1.03)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.tag{display:inline-block;align-self:flex-start;font-size:12px;font-weight:500;padding:2px 10px;border-radius:999px;background:rgba(35,199,180,.14);color:#12796E}
.card h3{font-size:18px;line-height:1.42}
.meta{font-family:var(--mono);font-size:13px;color:var(--muted)}
.more{margin-top:auto;padding-top:10px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink);min-height:44px}
.more span{color:var(--teal);transition:transform .2s}
.pick-big{grid-column:span 2}

/* 专题索引 */
.topic-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px}
.topic-cards{display:grid;gap:20px;align-content:start}
.topic-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);transition:border-color .2s,box-shadow .2s}
.topic-card:hover{border-color:var(--teal);box-shadow:var(--sh-h)}
.topic-thumb{aspect-ratio:16/9;overflow:hidden}
.topic-thumb img{width:100%;height:100%;object-fit:cover}
.topic-info{padding:16px 20px 18px}
.topic-info h3{font-size:19px;margin:6px 0 4px}
.topic-info p{font-family:var(--mono);font-size:13px;color:var(--muted)}
.topic-list{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden}
.topic-list a{display:grid;grid-template-columns:38px 1fr auto 18px;align-items:center;gap:10px;min-height:52px;padding:0 18px;border-bottom:1px solid var(--line);transition:background .15s}
.topic-list li:last-child a{border-bottom:0}
.topic-list a:hover{background:rgba(35,199,180,.09)}
.t-num{font-family:var(--mono);font-size:12px;color:var(--teal)}
.t-name{font-size:15px;font-weight:500}
.t-tag{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:1px 9px}
.t-arrow{color:var(--teal);font-size:15px}

/* 方法步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.step{position:relative}
.step::before{content:"";position:absolute;left:48px;right:0;top:21px;height:2px;background:var(--teal);opacity:.35}
.step:last-child::before{display:none}
.step-num{width:44px;height:44px;border-radius:6px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font-family:var(--mono);font-size:16px;position:relative;z-index:2}
.step h3{font-size:18px;margin:16px 0 6px}
.step p{font-size:14px;color:var(--muted)}

/* 数据带 */
.stats{background:var(--ink);color:var(--paper);padding:64px 0;position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(246,241,231,.055) 0 1px,transparent 1px 26px);pointer-events:none}
.stats h2{color:var(--paper);font-size:30px;margin-bottom:8px;position:relative}
.stats .sec-sub{color:rgba(246,241,231,.7);position:relative;margin-bottom:32px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative}
.stat{padding:4px 24px}
.stat:first-child{padding-left:0}
.stat:nth-child(2),.stat:nth-child(4){border-left:1px solid rgba(246,241,231,.22)}
.stat b{display:block;font-family:var(--mono);font-size:42px;font-weight:500;color:var(--teal);line-height:1.15}
.stat span{font-size:14px;color:rgba(246,241,231,.72)}
.stat-note{position:relative;margin-top:26px;font-family:var(--mono);font-size:12px;color:rgba(246,241,231,.5)}

/* 证言 */
.quote-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:24px}
.q-main{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:36px 32px;box-shadow:var(--sh);display:flex;flex-direction:column;justify-content:center}
.q-main::before{content:"“";position:absolute;top:2px;left:18px;font-family:var(--serif);font-size:80px;line-height:1;color:var(--teal);opacity:.22}
.q-main p{position:relative;font-family:var(--serif);font-size:23px;line-height:1.62;margin-bottom:22px}
.q-side{display:grid;gap:20px;align-content:start}
.q-small{background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh)}
.q-small p{font-size:15px;color:var(--ink-soft);margin-bottom:14px}
.q-person{display:flex;align-items:center;gap:10px}
.avatar{width:38px;height:38px;border-radius:4px;background:var(--ink-soft);color:var(--paper);display:grid;place-items:center;font-family:var(--serif);font-size:15px;flex:0 0 auto}
.q-who{font-size:13px;color:var(--muted);line-height:1.5}
.q-who b{display:block;color:var(--ink);font-weight:500;font-size:14px}

/* 适用人群 */
.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.aud{padding:22px 4px 6px;border-top:2px solid var(--ink)}
.aud b{font-family:var(--mono);font-size:13px;color:var(--teal)}
.aud h3{font-size:18px;margin:8px 0 6px}
.aud p{font-size:14px;color:var(--muted)}

/* FAQ */
.faq-acc{list-style:none;margin:0;border-top:1px solid var(--line);background:transparent}
.faq-acc .accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent}
.faq-acc .accordion-title{position:relative;display:block;padding:18px 40px 18px 34px;font-family:var(--serif);font-size:17px;color:var(--ink);border:0;min-height:44px;line-height:1.6;transition:color .15s}
.faq-acc .accordion-title:hover{color:var(--teal)}
.faq-acc .accordion-title::before{content:"+";position:absolute;left:0;top:19px;width:20px;height:20px;border:1px solid var(--line);border-radius:3px;display:grid;place-items:center;font-family:var(--sans);font-size:14px;color:var(--muted);line-height:1}
.faq-acc .accordion-title::after{display:none}
.faq-acc .accordion-item.is-active .accordion-title::before{content:"−";color:var(--teal);border-color:var(--teal)}
.faq-acc .accordion-item.is-active .accordion-title{color:var(--ink)}
.faq-acc .accordion-content{padding:0 20px 20px 34px;border:0;border-left:2px solid var(--teal);margin-left:9px;color:var(--muted);font-size:15px;background:transparent}

/* 更新日志 */
.log-grid{display:grid;grid-template-columns:1fr 300px;gap:24px}
.log-list{border-top:1px solid var(--line)}
.log-row{display:grid;grid-template-columns:92px 88px 72px 1fr 18px;align-items:center;gap:12px;padding:15px 0;border-bottom:1px solid var(--line);transition:background .15s}
.log-row:hover{background:rgba(35,199,180,.06)}
.log-date{font-family:var(--mono);font-size:13px;color:var(--muted)}
.log-ver{font-family:var(--mono);font-size:12px;color:var(--ink);border:1px solid var(--line);border-radius:999px;padding:1px 9px;justify-self:start;background:var(--white)}
.log-cat{font-size:12px;color:#12796E;background:rgba(35,199,180,.14);border-radius:999px;padding:1px 9px;justify-self:start}
.log-title{font-size:15px;color:var(--ink)}
.log-arrow{color:var(--teal);font-size:15px}

/* 指标 */
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}
.metric{border-top:2px solid var(--ink);padding-top:14px}
.metric b{display:block;font-family:var(--mono);font-size:32px;font-weight:500;line-height:1.2}
.metric span{font-size:13px;color:var(--muted)}
.bar{margin-bottom:20px}
.bar-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:7px}
.bar-top span:last-child{font-family:var(--mono);color:var(--muted);font-size:13px}
.bar-track{height:8px;border:1px solid var(--line);border-radius:999px;background:var(--white);overflow:hidden}
.bar-fill{height:100%;background:var(--teal);border-radius:999px}

/* 标签与搜索 */
.tag-search{display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:start}
.tagcloud{display:flex;flex-wrap:wrap;gap:10px}
.tagcloud a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:4px;background:var(--white);font-size:14px;transition:background .15s,color .15s,border-color .15s}
.tagcloud a:hover{background:var(--teal);color:var(--ink);border-color:var(--teal)}
.searchbar{display:flex;gap:10px}
.searchbar input{flex:1;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--white);padding:0 14px;font-size:15px;font-family:var(--sans);color:var(--ink)}
.searchbar input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 2px rgba(35,199,180,.22)}
.search-hint{margin-top:12px;font-size:13px;color:var(--muted)}

/* CTA */
.cta{background:var(--ink);color:var(--paper);padding:84px 0;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,rgba(246,241,231,.05) 0 1px,transparent 1px 30px);pointer-events:none}
.cta h2{color:var(--paper);font-size:32px;margin-bottom:12px;position:relative}
.cta .cta-desc{position:relative;color:rgba(246,241,231,.74);font-size:16px;margin-bottom:24px;max-width:60ch}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.cta .btn-ghost{border-color:rgba(246,241,231,.35);color:var(--paper)}
.cta .btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.form-inline{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:760px}
.field label{display:block;font-size:13px;color:rgba(246,241,231,.68);margin-bottom:6px}
.field input,.field textarea{width:100%;height:44px;background:rgba(246,241,231,.07);border:1px solid rgba(246,241,231,.26);border-radius:4px;color:var(--paper);padding:0 14px;font-size:15px;font-family:var(--sans)}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6}
.field input::placeholder,.field textarea::placeholder{color:rgba(246,241,231,.4)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 2px rgba(35,199,180,.26)}
.full{grid-column:1 / -1}

/* 页脚 */
.site-footer{background:var(--white);border-top:1px solid var(--line);padding:56px 0 0}
.foot-desc{margin-top:14px;font-size:14px;color:var(--muted);max-width:34ch}
.foot-col h3{font-family:var(--sans);font-size:15px;font-weight:500;letter-spacing:.4px;margin-bottom:12px}
.foot-col a{display:inline-flex;align-items:center;min-height:36px;font-size:14px;color:var(--muted);transition:color .15s}
.foot-col a:hover{color:var(--teal)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid var(--line);margin-top:40px;padding:18px 0;font-size:13px;color:var(--muted);font-family:var(--mono)}

/* off-canvas */
.oc-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.oc-body{padding:16px 20px 28px}
.oc-body a.oc-link{display:flex;align-items:center;min-height:46px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.oc-body a.oc-link:hover{color:var(--teal)}
.oc-search{display:flex;gap:8px;margin:16px 0 18px}
.oc-search input{flex:1;height:44px;border:1px solid var(--line);border-radius:4px;padding:0 12px;font-size:15px;background:var(--white);font-family:var(--sans)}
.oc-search button{min-width:64px;height:44px;border:1px solid var(--line);border-radius:4px;background:var(--ink);color:var(--paper);font-size:14px}

/* 响应式 */
@media screen and (max-width:1024px){
  .sec{padding:68px 0}
  .hero h1{font-size:42px}
  .hero{padding-top:48px}
  .main-nav{gap:14px;font-size:14px}
  .pick-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .log-grid{grid-template-columns:1fr}
  .tag-search{grid-template-columns:1fr;gap:24px}
  .aud-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:34px}
  .stat b{font-size:34px}
}
@media screen and (max-width:768px){
  .main-nav,.header-right .btn{display:none}
  .menu-btn{display:inline-flex}
  .idxbar-nav a{margin-left:12px}
  .sec{padding:52px 0}
  .sec-head h2,.cta h2{font-size:26px}
  .hero h1{font-size:34px}
  .hero-sub{font-size:16px}
  .hero-desc{font-size:15px}
  .pain-grid{grid-template-columns:1fr}
  .p-a,.p-d{grid-column:auto}
  .cap-grid{grid-template-columns:1fr}
  .pick-grid{grid-template-columns:1fr}
  .pick-big{grid-column:auto}
  .steps{grid-template-columns:1fr;gap:24px}
  .step{padding-left:62px}
  .step-num{position:absolute;left:0;top:0}
  .step::before{left:21px;right:auto;top:44px;bottom:-28px;width:2px;height:auto}
  .step:last-child::before{display:none}
  .step h3{margin-top:0}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .stat{padding:4px 18px}
  .stat:nth-child(2),.stat:nth-child(4){border-left:1px solid rgba(246,241,231,.22)}
  .stat:nth-child(3){padding-left:0;border-left:0}
  .metrics-grid{grid-template-columns:repeat(2,1fr)}
  .log-row{display:block;padding:14px 0}
  .log-date,.log-ver,.log-cat{display:inline-block;margin:0 8px 4px 0;font-size:12px}
  .log-title{display:block;font-size:15px}
  .log-arrow{display:none}
  .form-inline{grid-template-columns:1fr}
  .q-main{padding:26px 22px}
  .q-main p{font-size:19px}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:18px;padding-right:18px}
  .idxbar{font-size:11px}
  .idxbar .grid-container span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:44%}
  .idxbar-nav a{margin-left:10px}
  .hero h1{font-size:30px}
  .logo{font-size:17px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .chips li{font-size:12px}
  .aud-grid{grid-template-columns:1fr 1fr;gap:16px}
  .aud h3{font-size:16px}
  .metric b{font-size:26px}
  .searchbar{flex-direction:column}
  .searchbar .btn{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .foot-bottom{font-size:12px}
  .topic-list a{grid-template-columns:32px 1fr 18px;padding:0 14px}
  .t-tag{display:none}
}